UK metals firms are poised to pursue legal action following an abrupt government-imposed 25% tariff on steel imports from Vietnam and South Korea—affecting even shipments already paid for. The decision, issued with just 24 hours’ notice, disrupted supply chains and resulted in additional costs exceeding £500,000 for some manufacturers. The Confederation of British Metalforming (CBM) criticised the move, stating it diverged from the Trade Remedies Authority’s (TRA) recommendation of a phased, quota-based approach. Instead, the government opted for immediate, sweeping action aimed at shielding domestic producers like Tata Steel and British Steel. CBM members say the tariff shift contradicts industry guidance and demanded policy clarity. The firms are now preparing a judicial review, while awaiting a response from the Business Secretary, Jonathan Reynolds. The controversy underscores rising tensions in trade policy and the strain sudden regulatory shifts can place on downstream industries reliant on timely imports.